Straightforward Synthesis and Evaluation of Polymeric Sensing Materials for Acetone Detection

Abstract

The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/mren.202000004. Happy 60 th , JBPS! Three polymeric materials (polyaniline, polypyrrole, and poly(methyl methacrylate)) are selected, prepared, and evaluated for potential use in acetone sensing (for possible diabetes-related applications). Of the materials studied, polyaniline and polypyrrole show the most promise. Polypyrrole allows for more acetone sorption (i.e., higher concentration of acetone sorbed), but does not distinguish between different target analytes (that is, it is not selective). A material's ability to distinguish between several gas analytes simultaneously (in a gas mixture) is rarely evaluated; selectivity is typically based on a "one-analyteat-a-time" investigation. However, comparison of acetone sorption (in one experimental test) and interferent sorption (in a complementary experimental test) does not consider interactions that might occur between gas analytes; this motivates the sorption analysis of gas mixtures that is shown in this work. The most promising results are obtained when polyaniline or polypyrrole is exposed to acetone-rich gas mixtures with low amounts of acetaldehyde, ethanol, and benzene (interferent gases). Polymer doping using three metal oxides (SnO 2 , WO 3 , and ZnO) is also investigated, but metal oxide addition has a limited effect on the sorption performance. This is true for all three metal oxides, regardless of the amount of doping (over the range studied; up to 20 wt%).

Indium Oxide Doped Polyaniline for Detection of Formaldehyde

“…Similar observations about metal incorporation were also observed in Scott et al. [ 20 ] while evaluating polymeric materials for acetone detection. Consequently, metal oxide incorporation could also have a significant effect on surface morphology and therefore, sorption capabilities of the polymeric nanocomposites.…”

Design of polymeric materials: Experiences and prescriptions

“…In spite of the fact that PMMA had been widely advertised elsewhere as a viable sensing material for acetone detection, the sorption observed in this preliminary experimental work was negligible. [ 69 ] This was true for all PMMA‐based materials in the study, with and without metal oxide dopants. Thus, the preliminary design stage was revisited.…”

“…The preliminary experimental work in this case involved the synthesis and evaluation of 30 candidate polymers (three polymer backbones with varying levels of three metal oxide dopants). [ 69 ] Since it was still part of the preliminary investigation, the experimental procedure was relatively uncomplicated [ 57 ] ; sensitivity and selectivity measurements provided a good overview of the materials' performance. The results from this stage (along with additional background information from the literature) made it possible to identify the most promising materials and to discern the most important variables, which ultimately led to the synthesis of more customized materials.…”

Preparation of ZIF-8/PAN composite nanofiber membrane and its application in acetone gas monitoring

“…Capacitive gas sensor has the advantages of fast response, high linearity, high sensitivity and low power consumption, so capacitive gas sensor has become an important branch of gas sensor [11]. At present, the sensitive materials used in acetone gas sensor mainly include metal oxide semiconductor (MOS) [4,12], metal-organic frameworks (MOFs) [13,14], conductive polymer [15] and so on.…”